99.9s秒表代码c语言

#include <reg51.h>#include <intrins.h>sbit DG1 = P0^0;sbit DG2 = P0^1;sbit DG3 = P0^2;sbit START_KEY = P1^0;sbit SUSPEND_KEY = P1^1;sbit RESET_KEY = P1^2;sbit LED1 = P1^4;sbit LED2 = P1^5;sbit LED3 = P1^6;sbit LED4 = P1^7;unsigned char WorkMode = 0;#define STANDBY_MODE 0#define RECORD_MODE 1#define SUSPEND_MODE 2#define RECORDOUT_MODE 3unsigned int display_num = 0;unsigned char timeoutnum = 0;unsigned char duanxuan[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};void delay2ms(void);void dev_init(void);void Timer0_init(void);void Timer0_start(void);void Timer0_stop(void);void standby_mode(void);void record_mode(void);void suspend_mode(void);void recordout_mode(void);void display(unsigned int value);void main(){dev_init();Timer0_init();while(1){switch(WorkMode){case STANDBY_MODE:standby_mode();break;case RECORD_MODE:record_mode();break;case SUSPEND_MODE:suspend_mode();break;case RECORDOUT_MODE:recordout_mode();break;default:break;}display(display_num);}}void delay2ms(void) //误差0us{unsigned char a,b;for(b=4;b>0;b--)for(a=248;a>0;a--);_nop_(); //if Keil,require use intrins.h }void dev_init(void){DG1 = 0;DG2 = 0;DG3 = 0;LED1 = 1;LED2 = 1;LED3 = 1;LED4 = 1;}void Timer0_init(void){TMOD = 0x01;TH0 = 0x3C;TL0 = 0xB0;EA = 1;}void Timer0_start(void){ET0 = 1;TR0 = 1;}void Timer0_stop(void){ET0 = 0;TR0 = 0;}void standby_mode(void){LED1 = 0;LED2 = 1;LED3 = 1;LED4 = 1;if(START_KEY == 0){timeoutnum = 0;display_num = 0;Timer0_init();Timer0_start();WorkMode = RECORD_MODE;}if(RESET_KEY == 0){Timer0_stop();timeoutnum = 0;display_num = 0;WorkMode = STANDBY_MODE;}}void record_mode(void){LED1 = 1;LED2 = 0;LED3 = 1;LED4 = 1;if(SUSPEND_KEY == 0){Timer0_stop();WorkMode = SUSPEND_MODE;}if(RESET_KEY == 0){Timer0_stop();timeoutnum = 0;display_num = 0;WorkMode = STANDBY_MODE;}}void suspend_mode(void){LED1 = 1;LED2 = 1;LED3 = 0;LED4 = 1;if(START_KEY == 0){Timer0_start();WorkMode = RECORD_MODE;}if(RESET_KEY == 0){Timer0_stop();timeoutnum = 0;display_num = 0;WorkMode = STANDBY_MODE;}}void recordout_mode(void){LED1 = 1;LED2 = 1;LED3 = 1;LED4 = 0;if(RESET_KEY == 0){Timer0_stop();timeoutnum = 0;display_num = 0;WorkMode = STANDBY_MODE;}}void display(unsigned int value){P2 = duanxuan[value/100];DG1 = 1;delay2ms();DG1 = 0;P2 = duanxuan[(value%100)/10]+0x80;DG2 = 1;delay2ms();DG2 = 0;P2 = duanxuan[value%10];DG3 = 1;delay2ms();DG3 = 0;}void Timer0Interrupt(void) interrupt 1{TH0 = 0x3C;TL0 = 0xB0;timeoutnum++;if(timeoutnum == 2)//100ms{timeoutnum = 0;display_num++;if(display_num>=999){Timer0_stop();WorkMode = RECORDOUT_MODE;}}}#include <reg51.h>#include <intrins.h>sbit DG1 = P0^0; //位选1，数码管第一位sbit DG2 = P0^1; //位选2，数码管第二位sbit DG3 = P0^2; //位选3，数码管第三位sbit START_KEY = P1^0; //开始按键sbit SUSPEND_KEY = P1^1; //暂停按键sbit RESET_KEY = P1^2; //重置按键sbit LED1 = P1^4; //LED灯第一个sbit LED2 = P1^5; ////LED灯第二个sbit LED3 = P1^6; //LED灯第三个sbit LED4 = P1^7; //LED灯第四个unsigned char WorkMode = 0; //工作模式#define STANDBY_MODE 0 //宏定义，待机模式#define RECORD_MODE 1 //宏定义，计时模式#define SUSPEND_MODE 2 //宏定义，暂停模式#define RECORDOUT_MODE 3 //宏定义，计时超出99.9秒模式unsigned int display_num = 0; //显示的数据，如99.9秒为999unsigned char timeoutnum = 0; //定时器超时次数unsigned char duanxuan[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //数码管段选void delay2ms(void); //延时函数，2msvoid dev_init(void); //设备初始化void Timer0_init(void); //定时器0初始化void Timer0_start(void); //开始定时器0void Timer0_stop(void); //停止定时器0void standby_mode(void); //待机模式void record_mode(void); //计时模式void suspend_mode(void); //暂停模式void recordout_mode(void); //计时超出99.9s模式void display(unsigned int value); //数码管显示函数void main(){dev_init(); //设备初始化Timer0_init(); //定时器0初始化while(1){switch(WorkMode) //工作模式判断{case STANDBY_MODE: //待机模式standby_mode(); //待机模式工作break;case RECORD_MODE: //计时模式record_mode(); //计时模式工作break;case SUSPEND_MODE: //暂停模式suspend_mode(); //暂停模式工作break;case RECORDOUT_MODE: //计时超出99.9s模式recordout_mode(); //计时超出99.9s模式工作break;default:break;}display(display_num); //数码管显示}}void delay2ms(void) //误差0us{unsigned char a,b;for(b=4;b>0;b--)for(a=248;a>0;a--);_nop_(); //if Keil,require use intrins.h}void dev_init(void){DG1 = 0; //第一位数码管位选为0 即第一个数字不亮，下同DG2 = 0; //第二位数码管位选为0 即第一个数字不亮，下同DG3 = 0; //第三位数码管位选为0 即第一个数字不亮LED1 = 1; //第一个LED灯灭LED2 = 1; //第二个LED灯灭LED3 = 1; //第三个LED灯灭LED4 = 1; //第四个LED灯灭}void Timer0_init(void){TMOD = 0x01; //模式1TH0 = 0x3C; //TH0，TL0 定时0 装值TL0 = 0xB0;EA = 1; //使能中断}void Timer0_start(void){ET0 = 1; //开启定时器0中断TR0 = 1; //定时器0开始计时}void Timer0_stop(void){ET0 = 0; //禁止定时器0中断TR0 = 0; //停止计时器0计时}void standby_mode(void)LED1 = 0; //第一个LED灯亮，下面三句都为灭LED2 = 1;LED3 = 1;LED4 = 1;if(START_KEY == 0) //开始计时按键按下{timeoutnum = 0; //定时器溢出次数清0display_num = 0; //显示数据清0Timer0_init(); //定时器0初始化Timer0_start(); //开始计时WorkMode = RECORD_MODE; //模式切换至计时模式}if(RESET_KEY == 0) //重置按键按下{Timer0_stop(); //停止定时器0timeoutnum = 0; //定时器0溢出次数清0display_num = 0; //显示数据清0WorkMode = STANDBY_MODE; //工作模式切换至待机模式}}void record_mode(void){LED1 = 1;LED2 = 0; //第2个LED灯亮，其他三句都为灭LED3 = 1;LED4 = 1;if(SUSPEND_KEY == 0) //暂停按键按下{Timer0_stop(); //停止定时器0WorkMode = SUSPEND_MODE; //工作模式切换至暂停模式}if(RESET_KEY == 0) //重置按键按下{Timer0_stop(); //停止定时器0timeoutnum = 0; //定时器0溢出次数清0display_num = 0; //显示数据清0WorkMode = STANDBY_MODE; //工作模式切换至待机模式}}void suspend_mode(void)LED1 = 1;LED2 = 1;LED3 = 0; //第3个LED灯亮，其他三句都为灭LED4 = 1;if(START_KEY == 0) //开始计时按键按下{Timer0_start(); //开始定时器0WorkMode = RECORD_MODE; //工作模式切换至计时模式}if(RESET_KEY == 0) //重置按键按下{Timer0_stop(); //停止定时器0timeoutnum = 0; //定时器溢出次数清0display_num = 0; //显示数据清0WorkMode = STANDBY_MODE; //工作模式切换至待机模式}}void recordout_mode(void){LED1 = 1;LED2 = 1;LED3 = 1;LED4 = 0; //第4个LED灯亮，其他三句都为灭if(RESET_KEY == 0) //重置按键按下{Timer0_stop(); //停止定时器0timeoutnum = 0; //定时器溢出次数清0display_num = 0; //显示数据清0WorkMode = STANDBY_MODE; //工作模式切换至待机模式}}void display(unsigned int value){P2 = duanxuan[value/100]; //第一个数码管段选DG1 = 1; //开位选delay2ms(); //延时2msDG1 = 0; //关位选P2 = duanxuan[(value%100)/10]+0x80; //第二个数码管段选，+0x80是为了显示小数点DG2 = 1; //开位选delay2ms(); //延时2msDG2 = 0; //关位选P2 = duanxuan[value%10]; //第三个数码管段选DG3 = 1; //开位选delay2ms(); //延时2msDG3 = 0; //关位选}//定时器0中断处理函数void Timer0Interrupt(void) interrupt 1{TH0 = 0x3C; //TH0，TL0 定时0 装值TL0 = 0xB0;timeoutnum++; //超时次数加1if(timeoutnum == 2)//100ms{timeoutnum = 0; //定时器溢出次数清0display_num++; //显示数据加1if(display_num>=999) //如果显示数据大于999，即99.9s{Timer0_stop(); //停止定时器0WorkMode = RECORDOUT_MODE; //工作模式切换至计时溢出模式}}}。